Elder



W. W., BAT'CHELDER.

Gas Burner.

No. 18,230., Patented Sept.'22,1'857,.

UNITED STATES PATENT OFFICE.

W. W. BATCHELDER, OF NEW YORK, N. Y.

GAS-BURNER.

Specification of Letters Patent No. 18,230, dated September 22, 1857.

To an whom it may concern Be it known that I, WILLIAM W. BATCH- ELDER,of New York, county of New York, and State of New York, have inventedcertain new and useful Improvements in Gas- Burning Apparatus; and I dohereby declare that the following is a full, clear, and

. exact description of the same, reference being made to the annexeddrawings, making a part of this specification, which are fully describedherein.

Similar letters throughout.

My improvement in gas burners or jets is a superior method of buringilluminating gas, whereby greater economy is obtained in theconsumption, as well as a superior quality of light.

The principle consists in causing the gas to issue in succession fromtwo apertures; of different areas, placed near together, and so shapedthat the gas shall be made to pass in a thin stratum from the first orlesser aperture to the next or greater aperture, in such manner that thestream shall not be deviated in passing from one to and through theother.

The construction and operation is as follows:

At is the first gas jet, being of common construction, and screwed uponthe gas pipe, as usual. This terminates in a fine slit (a) at the top,and would alone form a complete burner such as is technically called abats wing, and constitutes the first of the two apertures according tomy improvement. Over this I place a cap or cover (6) the interior ofwhich is so large as to leave a clear space all around. This has arounded top across, wherein is also cut a narrow slit (1)), but formingan opening several times the area of the inner slit (a). Near the baseof this the cap is pierced with several small holes (0), and finally itis secured in place upon (a) by an adjusting screw or screws Thesuccessful Working will depend upon the accuracy of the adjustment ofthe two aperture (a) and (6). And this requires, first, that the flatstream of gas issuing from (a) shall so indicate similar parts enter (5)that it shall pass through without being deviated or the current broken,which it would be were these two slits not precisely in the same plane.

The second feature of adjustment is that the lateral lines or base ofthe stratum shall not strike below the ends of the slit (1)) but shallproject so as to pass through just above or at the point-s oftermination, as in the lines of Figure II, which is a view of the flameshown flatwise, all which adjustment may be readily found by trial, whenthe gas is burning, and when found, set in position by the screws (d).The flame produced by my improvement is different from that of a commonburner in that it is much larger. The light is denser, not so glaring,but much softer, it is more agreeable to the eye, and with an equalconsumption of gas-the illumination is much greater This light may stillbe improved by the admission of air into the cap (5); this is effectedthrough the holes (0) and the air ascends in the direction of the arrowsto the top of the said cap where it infringes upon the surface of thegas as it passes from one aperture to the other, issuing wit-h it at(b).

I have described the aperture as a slit, but it may be otherwise formed,provided it be such as to cause a flat stratum of gas to issue in amanner well known. Instead of the holes (0) space might be left to allowthe air to pass in at the bottom or through grooves cut up the sides forthat purpose.

I claim- The improved method of burning gas, described, viz. combiningtwo apertures of different areas so arranged that a flat stratum of gasissuing in the first instance from the lesser aperture shall infringeand press upon the second and larger aperture placed in the same planewith the issuing jet, and in such manner as to pass it without causingany deviation thereof as described.

W. W. BATCHELDER. Witnesses S. H. MAYNARD, THOMAS DUCEY.

